1 ## SPDX-License-Identifier: GPL-2.0-only
3 config CPU_INTEL_COMMON
5 select RESERVED_PHYSICAL_ADDRESS_BITS_SUPPORT
10 bool "Enable VMX for virtualization"
13 config SET_IA32_FC_LOCK_BIT
14 bool "Set IA32_FEATURE_CONTROL lock bit"
17 Although the Intel manual says you must set the lock bit in addition
18 to the VMX bit in order for VMX to work, this isn't strictly true, so
19 we have the option to leave it unlocked and allow the OS (e.g. Linux)
20 to manage things itself. This is beneficial for testing purposes as
21 there is no need to reflash the firmware just to toggle the lock bit.
22 However, leaving the lock bit unset will break Windows' detection of
23 VMX support and built-in virtualization features like Hyper-V.
25 config SET_MSR_AESNI_LOCK_BIT
26 bool "Lock the AES-NI enablement state"
29 This config sets the AES-NI lock bit, if available, to prevent any
30 further change of AES-NI enablement. This may be disabled for e.g.
33 config CPU_INTEL_COMMON_TIMEBASE
38 config CPU_INTEL_COMMON_VOLTAGE
41 config CPU_INTEL_COMMON_SMM
43 default y if CPU_INTEL_COMMON